yea, i d like to see systems that are directly connected to each other - like most of the omircrons. you can see the double spiral galaxy thingy from many of those systems - and its quite close in omicron-gamma. makes one feel that the systems are really where they should be - and not just randomly linked to each other.
what you could do for sure is - go more into the whole 3 dimensions. that is - not only the pizza box system - but also make more use of the verticals - like the palau icecloud in delta ( the right one ) which is high above the ecliptic.
i d also like to see more spa and cruise liners around:D- there are only 2 of them, aren t there? - edinbourgh and sigma-17 ... oh - yea and more minefields - now that we get a miner ID in the next mod version.